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What is an A-weighted decibel (dBA or dB(A))?
Learn about A-weighted decibels, an expression of the relative loudness of sounds as perceived by the human ear. Explore how dBA works, is measured and is used.
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The range of sound intensities that the human ear can detect is so large that a special decibel scale (named after Alexander Graham Bell) is used to measure and compare sound intensities. The decibel level d B of a sound is given by d B(I)=10 log((I)/(I0)) where I0 is the intensity of sound that is barely audible to the human ear. Find the decibel level for the following sounds. Round to the nearest tenth of a decibel. Sound Intensit Intensity a. Automobile traffic I=1.58 ×10^8 ·I0 b. Quiet co
The range of sound intensities that the human ear can detect is so large that a special decibel scale (named after Alexander Graham Bell) is used to measure and compare sound intensities. The decibel level d B of a sound is given by d B(I)=10 log((I)/(I0)) where I0 is the intensity of sound that is barely audible to the human ear. Find the decibel level for the following sounds. Round to the nearest tenth of a decibel. Sound Intensit Intensity a. Automobile traffic I=1.58 ×10^8 ·I0 b. Quiet co
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